package cn.wolfcode.car.business.service.impl;

import cn.wolfcode.car.base.domain.User;
import cn.wolfcode.car.business.domain.Statement;
import cn.wolfcode.car.business.domain.StatementItem;
import cn.wolfcode.car.business.mapper.StatementItemMapper;
import cn.wolfcode.car.business.mapper.StatementMapper;
import cn.wolfcode.car.business.query.StatementItemQuery;
import cn.wolfcode.car.business.service.IStatementItemService;
import cn.wolfcode.car.common.base.page.TablePageInfo;
import cn.wolfcode.car.common.exception.BusinessException;
import cn.wolfcode.car.common.util.Convert;
import cn.wolfcode.car.shiro.ShiroUtils;
import com.github.pagehelper.PageHelper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.List;

@Service
@Transactional
public class StatementItemServiceImpl implements IStatementItemService {

    @Autowired
    private StatementItemMapper statementItemMapper;
    @Autowired
    private StatementMapper statementMapper;


    @Override
    public TablePageInfo<StatementItem> query(StatementItemQuery qo) {
        PageHelper.startPage(qo.getPageNum(), qo.getPageSize());
        return new TablePageInfo<StatementItem>(statementItemMapper.selectForList(qo));
    }


    @Override
    public void save(StatementItem statementItem) {

        statementItemMapper.insert(statementItem);
    }

    @Override
    public StatementItem get(Long id) {

        return statementItemMapper.selectByPrimaryKey(id);
    }


    @Override
    public void update(StatementItem statementItem) {


        statementItemMapper.updateByPrimaryKey(statementItem);
    }

    @Override
    public void deleteBatch(String ids) {
        Long[] dictIds = Convert.toLongArray(ids);
        for (Long dictId : dictIds) {
            statementItemMapper.deleteByPrimaryKey(dictId);
        }
    }

    @Override
    public List<StatementItem> list() {
        return statementItemMapper.selectAll();
    }

    @Override
    public void deleteByStatementId(Long statementId) {
        statementItemMapper.deleteByStatementId(statementId);
    }

    @Override
    public void saveItems(List<StatementItem> items) {


        if (items != null && items.size()>0){
          StatementItem last = items.remove(items.size() - 1);
            statementItemMapper.deleteByStatementId(last.getStatementId());



            BigDecimal totalPrice = new BigDecimal("0.0");
            BigDecimal totalQuantity = new BigDecimal("0");

            //结算单明细传过来还有数据
            if (items.size()>0) {
                for (StatementItem item : items) {
                    statementItemMapper.insert(item);
                                                                 // 相乘
                    totalPrice = totalPrice.add(item.getItemPrice().multiply(new BigDecimal(item.getItemQuantity())));
                    totalQuantity = totalQuantity.add(new BigDecimal(item.getItemQuantity()));
                }
            }
                           //比较 后面的比较符是什么 这里就是什么,
            if (totalPrice.compareTo(last.getItemPrice())<0) {
                throw  new BusinessException("折扣价格大于总价格");
            }

            if (items.size()>0){
                statementMapper.updateAmount(last.getStatementId(),totalPrice,totalQuantity,last.getItemPrice());
            }else {
                statementMapper.updateAmount(last.getStatementId(),new BigDecimal("0.0"),new BigDecimal("0"),new BigDecimal("0.0"));
            }

        }else {
            throw  new BusinessException("参数异常");
        }


    }

    @Override
    public void payStatement(Long statementId) {
        User user = ShiroUtils.getUser();

        statementMapper.payStatement(statementId,user.getId(),Statement.STATUS_PAID);
    }
}
